Federal Register - September 9, 2021
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Source: Federal Register
Federal Register / Vol. 86, No. 172 / Thursday, September 9, 2021 / Proposed Rules 2 Do an inspection of the elevator internal mass-balance weights and attachment parts for corrosion and fragmentation, and weigh each mass-balance. You must remove and weigh the mass-balance weight even if there is no sign of corrosion or material fragmentation.
3 Do an inspection of the elevator adjustable mass-balance weights and attachment parts for corrosion and fragmentation, and weigh each mass-balance.
4 Do an inspection of the aileron massbalance weights and attachment parts for corrosion and fragmentation, and weigh each
mass-balance. You must remove and weigh the mass-balance weight even if there is no sign of corrosion or material fragmentation.
5 Do an inspection of the rudder adjustable mass-balance weights and attachment parts for corrosion and fragmentation, and weigh each mass-balance.
6 Do an inspection of the rudder internal mass-balance weights and attachment parts for corrosion and fragmentation and, weigh each mass-balance. You must remove and weigh the mass-balance weight even if there is no sign of corrosion or material fragmentation.
50491
i Retained Revision of the Airworthiness Limitations Section, With No Changes This paragraph restates the requirements of paragraph i of AD 20201208, with no changes. Within 10 days after July 1, 2020
the effective date of AD 20201208, revise the airworthiness limitations section ALS of the existing maintenance manual or instructions for continued airworthiness to add the information in table 1 to paragraph i of this AD and the initial compliance time information in table 2 to paragraph i of this AD.
BILLING CODE 491013P
VerDate Sep<11>2014
Maintenance Requirement
Inspection Type
Inspection Title
Interval
55-20-04-001
General visual inspection GVI
Internal GVI of Elevator MassBalance Weight and Attachments
60 Months
55-20-04-002
Special detailed inspection SDI
SDI Borescope Method of Elevator Mass-Balance Weight and Attachments
60MO
55-40-04-002
GVI
Internal GVI of Rudder Adjustable Mass-Balance Weight and Attachments
60MO
55-40-04-003
SDI
SDI Borescope Method of Rudder Fixed Mass-Balance Weight and Attachments
60MO
57-60-00-001
Detailed visual inspection DET
External DET of the Aileron
60MO
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Table 1 of paragraph i - New Airworthiness Limitations
